And many of us know, from the routine use of EI 40 to expose Velvia which was rated ISO 50, that even the ISO ratings of film are rather arbitrary! So why would we be surprised to see some variability in ISO sensitivity within digital cameras, too?!
Originally Posted by benjiboy
This brings us back to why I originally objected to your commentary in post 23, "so I.S.O 100 on a digital camera isn't the same as 100 I.S.O on a hand held separate light meter and film which is why the readings don't agree".
My digital camera meter matches my traditional handheld ('for film') meter! And my film camera meters don't all agree with each other, so they provide a shakey reference standard by which to judge digital camera meters, and film itself is not necessarily a perfect standard either, so film is an imperfect standard to compare against digital sensor sensitivity!
Last edited by wiltw; 10-19-2012 at 10:42 AM. Click to view previous post history.